The global movement to go green and reduce your carbon footprint, paired with interest in renewable energies due to power shortages, motivated SunWiWa (derived from Sun/Wind/Water) to develop and introduce the latest technology in renewable energy solutions to the industrial, agricultural and residential markets in Cape Town, South Africa.

SunWiWa partnered with German industry specialists with extensive experience in Europe, and formed SunWiWa Renewable Energy GermanyUG (haftungsbeschrankt). Together we specialize in the design, implementation and maintenance of these renewable energy sources.
We as a group are committed to uncontaminated energy, through the wise use of natural resources and innovation; and we aim to create efficient and economical solutions for a healthy life in harmony with the environment.
Our technical specialists in Germany negotiated the latest state-of-the-art technology, amended to suit the South African market and infrastructure, at the very best prices and warranty terms.
Meet the Team

Martin Hartman
Technical/Managing Director - South Africa
Martin has 30 years of business experience in both local and international markets. Originally educated and trained as a Master Electrician, he has extensive experience in the electrical and electronic fields, obtained across a wide variety of industries: including construction, manufacturing, refrigeration, agricultural and medical fields. Martin’s main strengths are problem solving, system design and technical application within his field of expertise. Martin has been actively involved in renewable energy with SunWiWa since 2012.

Christian Siglbauer
Technical/Managing Director - Germany
Christian has more than 13 years experience in renewable energy, specifically in plant design, project planning and implementation. He heads up SunWiWa in Germany, sourcing the latest technology available to export to South Africa. He also manages several photovoltaic plants in Germany, including Lithium-ion storage systems and a small hydroelectric plant, providing electricity to 150 households.His expertise is invaluable to the Group.

Ezme Hartman
Admin & Logistics Director - South Africa
Ezme studied B.Comm Industrial Psychology (UNISA) with years of marketing and management experience both as an entrepreneur and in the corporate world. She headed up the import division for a medical company for 10 years. Her admin and organizational skills solidifies the executive management team of SunWiWa.